Hi
I’m trying to unclock the FD on latitude 6430u but I could not find the audio chip for the pinmod so now I’m trying the setup_var method but unfortunately my bios seems to be compressed on UEFITool N58 :
So I cant find the varoffset of the param "Me FW", any clue on how I can decompress the content so that I can feed it to ifdtool ?
Thank you
UEFITool automatically decompresses such things, PE32 image is decompressed already. Either way, the BIOS Setup variables cannot be within “MEPlatformPolicy” or similar non-Setup module, so you’re looking at the wrong place.
Out of curiosity I tried a bios from a more recent latitude laptop and it’s not compressed as you can see on this screenshot and I’m able to use exported sct file with ifrextract (not ifdtool):
./ifrextract Section_PE32_image_IccOverClocking_IccOverClocking-test.sct 6430u-test
Input: Section_PE32_image_IccOverClocking_IccOverClocking-test.sct
Output: 6430u-test
Protocol: UNKNOWN
error: Unknown protocol
I feel I am missing something obvious 
Ignore compression, it does not matter. You need to find the correct BIOS Setup module within the BIOS. It unfortunately depends on the BIOS. It has been a common question though historically for other BIOS adjustments so try some google searching as well. I’m certain better instructions than the one I provide at the CSE cleanup thread can be found.
thanks I found the setup part but how do I use it with the ifrextract tool ? or should I use another tool ?
Input: Section_PE32_image_Setup_SetupPrep.sct
Output: fsfdfs
Protocol: UNKNOWN
error: Unknown protocol
Hi :O)
Works with IFRextract, no problem :
[Request] Dell Latitude 7414/5414/7214 Rugged Extreme Bios v1.26 Unlock HiddenMenu
you have more recent bios with ME11 with boot guard 
Did you used the latest releases of IFR extractor (0.3.6) : IRFExtractor_0.3.6_win.zip ?
https://github.com/LongSoft/Universal-IFR-Extractor/releases
Yes latest version but I juste find why it was not working … I knew it was something stupid lol
I was doing export from the PE/32 part not the hole SetupPrep part which is why it was not recognized I guess by IFR-Extractor
EDIT:
Ok so I found the param “Me FW …” set it to 1 rebooted and was able to dump full image with fpt which I could not before this.
Problem I cant flash back the FD with fpt, it says the CPU does not have access … same message I had when the FD was locked a bit weird
I can try to flash the hole image but I’m a bit scared dont want to brick it 